SOLUTION: y=3x+8 5x+2y=5

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Question 438135: y=3x+8
5x+2y=5
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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y = 3x + 8
5x + 2y = 5
:
use the first equation as substitution for y in the 2nd equation
5x + 2(3x+8) = 5
5x + 6x + 16 = 5
5x + 6x = 5 - 16
11x = -11
x = %28-11%29%2F11
x = -1
:
Find y using the 1st equation
y = 3(-1) + 8
y = -3 + 8
y = 5
:
Check your solutions in the 2nd equation
5(-1) + 2(5) = 5
-5 + 10 = 5; confirms our solution of x=-1, y=5